I think it is possible to make Pikmin on the 3Ds. To me their
are a couple easter eggs in the 3Ds.

1 If you had a DSi and transferd some data Pikmin will carry
it.

2 The Puzzle of Pikmin on the 3Ds at StreetPass.

I think that Nintendo could make Pikmin on the 3Ds because if
they revamped Ocarina of Time on the 3Ds. They have the
cappabilities of making Pikmin on the 3Ds. Other than Pikmin 3 they
have completed half of my dream. I would play that stuff for
days.